Does anyone have experience setting up Marketo and not using it for email functionality? Thoughts on pros/cons of a Marketo implementation for website customization, ad retargeting, etc., but not email (at least not initially)? Does it make more sense to use email from the beggining with Marketo vs. staying with a diferent email tool and transitioning email later on? Thanks!

I have gone from a ESP like MailChimp and VerticalResponse to a MAP and yes, during the implementation I was still utilizing the ESP until I had Marketo fully implemented. Once I did, I was eager to get started using it for email sends, so we ended our subscription with our ESP. That is the only case I can think of for not sending emails from Marketo immediately. I have not heard of any Marketo instance not utilizing email sends, it's a core functionality that surpasses what as ESP can accomplish.